<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>列表的过滤</title>
    <script src="../js/vue.js"></script>
    <script src="../js/阻止vue在启动时生成生产提示.js"></script>
</head>
<body>
    <div id="root">
        <h2>人员列表</h2>
        <input type="text" placeholder="请输入名字" v-model="keyWord">
        <ul>
            <li v-for="(p,index) of filPersons " :key="index">
                {{p.name}}-{{p.age}}-{{p.sex}}
            </li>
        </ul>
    </div>
    
</body>
<script>
    const vm = new Vue({
        el:'#root',
        data:{
            keyWord:'',
            persons:[
                {id:'001',name:'马冬梅',age:19,sex:'女'},
                {id:'002',name:'周冬雨',age:20,sex:'女'},
                {id:'003',name:'周杰伦',age:21,sex:'男'},
                {id:'004',name:'温兆伦',age:22,sex:'男'}
            ]
        },
        // 用监视属性watch实现
        // #region     开始折叠
       /*  watch:{
            // keyWord(val){
            //     // console.log('keyWord被修改了');
            //     this.filPersons = this.persons.filter((p)=>{
            //         return p.name.indexOf(val) !== -1
            //     })
            // }
            keyWord:{
                immediate:true,
                handler(val){
                    this.filPersons = this.persons.filter((p)=>{
                        return p.name.indexOf(val) !== -1
                    })
                }
            }
        } */
        // #endregion      折叠完毕
        // 用计算属性computed实现
        computed:{
            filPersons(){
                return this.persons.filter((p)=>{
                    return p.name.indexOf(this.keyWord)  !== -1
                })
            }
        }
    })
</script>
</html>